Screen time of award-winning actors in the history of the award confirms that it favors longer performances by secondary actors. The main performances of Carey Mulligan and Colman Domingo as the closest to the average of the winners in their categories.
No Oscar winner monopolizes the screen like Art Carney did in Harry and Dumb : he was present in 87% of the film and his greatest absence lasts only 40 seconds. Vivien Leigh is untouchable: she spent two hours and 23 minutes in the shoes of Scarlett O'Hara.